Wrench.



PATENTED DEC. 3, 1907,

-F. G. MILLER.

' WRENCH. APPLICATION FILED APR.'27,1907.

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FRANKLlN O. MILLER, OF KITTANNING, PENNSYLVANIA.

WRENCH.

Specification of Letters Patent.

Patented Dec. 3, 1907.

Application filed April 27. 1907. Serial No. 370.615.

To all whom it may concern:

Be it known that I, FRANKLIN (I. MILLER, a citizen of the United States of America, residing at Kittanning, in the county of Armstrong and State of Pennsylvania, have invented certain new and useful Improvements in Trenches, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to wrenches of that type commonly styled quick acting monkey wrenches.

The invention has for its object to provide a wrench wherein novel means is employed for retaining the adjustable jaw of awrench in a closed position, when not looked in engagement with the shank of the wrench.

Another object of this invention is to pro vide a simple and inexpensive, strong and durable wrench having novel means for locking the adjustable jaw of the wrench in a fixed position and easily and quickly releasing the same.

IVith the above and other objects in View the invention consists in the novel construction, combination and arrangement of parts to be hereinafter more fully described and then specifically pointed out in the appended claims.

Referring to the drawing forming part of this specification, like numerals of reference designate corresponding parts throughout the several views, in which Figure 1 is an elevation of my wrench, the handle thereof being partly broken away, Fig. 2 is a vertical sectional view of the wrench partly in elevation, Fig. 3 is a vertical sectional view of a locking nut or worm and actuating shaft used in connection with the wrench.

My wrench consists of a shank 1 having a toothed. jaw 2, said shank carrying a handle 3 and a fixed jaw 4.

Upon the shank 1 is slidably mounted an adjustable jaw 5 having straps 6 to embrace the shank 1 and retain the jaw in engagement therewith. The jaw 5 is recessed, as at 7, to accommodate a locking nut or worm 8 adapted to engage the toothed edge 2 of the shank 1. The locking nut or worm 8 is eccentrically mounted in the jaw 5, said locking nut or worm being retained therein by an actuating shaft 9 extending into the opening 10 of the jaw, through the nut or worm S, and into a socket 11 formed in the jaw 5 for receiving the upper end of the actuating shaft 9. The shaft 9 is revolubly supported upon an extension 12 carried by the shank 1 of the wrench, said shank being provided with a radially disposed arm 14, whereby the shaft can be rotated. For normally maintaining the shaft in a fixed position, I surround the same with a coiled spring 15, said spring having its upper end fixed in the jaw 5, as at 16, while its lower end is wrapped around the arm 14, as at 17.

In order that the locking nut or worm 8 can rotate in unison with the shaft 9, yet permit of free movement of said shaft within said nut or worm, I provide the shaft with a vertically disposed groove 18, and entering said groove are two screws 19, carried by the locking nut or worm 8.

The coiled spring 15 normally maintains the locking nut or worm 8 in engagement with the toothed edge 2 of the shank 1, and when it is desired to move the locking nut or worm out of engagement with the shank 1, the arm 14 is pressed outwardly, this movement of the arm placing the spring under tension, whereby when the arm is released, the spring 15 will return the locking nut or worm to its normal position in engagement with the shank 1.

When the locking nut or worm 8 is held out of engagement with the shank, the jaw 5 can be easily and quickly adjusted upon the shank 1 and held in its adjusted position by releasing the arm 14, the coiled spring 15 im mediately placing the locking nut or worm 8 in engagement with the shank to hold the adjustable jaw 5 in its adjusted position. Upon moving the arm 14 outwardly, the coiled spring 15 returns the adjustable jaw 5 to its normal position in engagement with the fixed 'aw 4. J The entire wrench, including the handle 8, is constructed of metal, whereby the wrench will withstand rough usage to which it is subjected.

What I claim and desire to secure by Letters Patent, is

1. In a Wrench, the combination with a toothed shank having a handle and a fixed jaw, of an adjustable jaw slidably mounted upon said shank and having a socket formed therein, an extension carried by said shank, a grooved shaft revolubly mounted upon said extension and extending into the socket of said adjustable jaw, a worm eccentrically mounted upon said shaft and adapted to engage said threaded shank, screws carried by said worm and extending into the groove of said shaft, an arm carried by said shaft, and means resting upon said extension and secured to said adjustable jaw for normally holding the same in a fixed position.

2, In a wrench, the combination with a I toothed shank having a handle and a fixed jaw, of an adjustable jaw slidably mounted upon said shank, an extension carried by said shank, a worm eccentrioally arranged in said adjustable jaw and adapted to engage said toothed shank, a shaft revolubly mounted upon said extension and extending through said worm and into said adjustable jaw, and means resting upon said extension and surrounding said shaft for normally holding said adjustable jaw in a fixed position.

3. In a Wrench, the combination with a toothed. shank having a fixed. aw, of an ad justable jaw slidably mounted upon said shank, a worm eccentrically mounted in said adjustable jaw and adapted to engage the toothed shank, a shaft supportedadjaoent to said shank and extending through said worm and adapted to rotate therewith, and a spring surrounding said shaft for normally holding said worm in engagement with said shank.

4. A wrench embodying a toothed shank, a fixedjaw carried thereby, an adjustable jaw slidably mounted upon said shank, a worm eccentrically mounted in said jaw and adapted to engage said shank, and a spring located beneath said jaw for simultaneously holding said jaw in a closed position and said worm in engagement with said shank.

In testimony whereof I affix my signature in the presence of two witnesses.

FRANKLIN C. MILLER. Vitnesses:

J. F. WILLIAMs, VVM. BALD. 

